Meissonier, RégisBelbaly, NassimHouzé, EmmanuelFeltz, FernandOtjacques, BenoîtOberweis, AndreasPoussing, Nicolas2019-06-122019-06-122006978-3-88579-186-7https://dl.gi.de/handle/20.500.12116/23765The objective of this article is to present the effects induced by a "passive management style" on conflict situations based on existing theories of user resistance and IT implementation. This article is an advanced work that has been already presented at the 10th AIM conference. The case study of Netia corp a high-tech SME puts forward the evolution of the project and the reactions of the users. This longitudinal research has concerned two "key moments" [Gi95] which switched from an inter-group conflict situation to straightforward individual resistances. This article shows that our results are opposed, in some aspects, to the ones found by Barki et al. [BH01].enText/Conference Paper1617-5468